Powerset: use saturating add for position

rust-itertools · Sep 13, 2020 · 577ca75 · 577ca75
1 parent b9edf18
commit 577ca75
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/src/powerset.rs b/src/powerset.rs
@@ -51,15 +51,15 @@ impl<I> Iterator for Powerset<I>
 
     fn next(&mut self) -> Option<Vec<I::Item>> {
         if let Some(elt) = self.combs.next() {
-            self.pos += 1;
+            self.pos = self.pos.saturating_add(1);
             Some(elt)
         } else {
             if self.done {
                 None
             } else {
                 self.combs.init(self.combs.k() + 1);
                 if let Some(elt) = self.combs.next() {
-                    self.pos += 1;
+                    self.pos = self.pos.saturating_add(1);
                     Some(elt)
                 } else {
                     // None returned from a new Combinations indicates we're finished.